within minutes of mr. mandela's death, a few flowers were placed outside his home. look at it now. in the days to come, there will be more. >> that is for sure. byron pitts tonight. thank you. >>> and some dramatic pictures coming in from overseas, from ukraine. hundreds of thousands of people filling the central square there in the capital. angry that their president is now forging closer ties with russia and moving away from the west. a landmark statue of vladimir lenin was toppled over. people taking turns taking aim. >>> and from iran tonight, state tv is reporting that u.n. inspectors have begun their work. it comes after that landmark short-term nuclear agreement. this weekend in washington, meantime, president obama giving the odds of achieving a long-term agreement with iran 50/50 at best. >>> meantime, the pentagon under fire tonight for its decision to buy combat helicopters made in russia. lawmakers on both sides, asking, why not made in america? here tonight, abc's aditi roy. >> reporter: tonight, new questions arise as to why the pentagon chose to spend more than $1 bi